test(server/v2/stf): Add test for mergeiterator #22141
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📝 Walkthrough📝 WalkthroughWalkthroughA new test file named Changes
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (2)
server/v2/stf/branch/mergeiter_test.go (2)
24-26: Consider usingt.Fatalfinstead oft.Fatalfor better error messages.In the setup functions, replace
t.Fatal(err)witht.Fatalf("failed to set key-value pair: %v", err). This provides more context in case of a failure, making it easier to debug.Also applies to: 36-38, 46-48, 50-52, 59-61, 62-64, 66-68, 69-71, 79-81, 82-84, 86-88, 89-91
110-115: Addt.Helper()to themustfunction.The
mustfunction is a test helper. Addt.Helper()as the first line of the function to improve error reporting. This will cause the file and line number reported for failures to be in the calling function rather than inside the helper.
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- server/v2/stf/branch/mergeiter_test.go (1 hunks)
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server/v2/stf/branch/mergeiter_test.go (2)
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**/*.go: Review the Golang code for conformity with the Uber Golang style guide, highlighting any deviations.
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🔇 Additional comments (4)
server/v2/stf/branch/mergeiter_test.go (4)
3-7: LGTM: Import statements are correct and follow style guidelines.The import statements are appropriate for the test file's requirements. The use of the
corestorealias for the "cosmossdk.io/core/store" package follows the Uber Go Style Guide recommendation for package aliases.
9-108: LGTM: Well-structured table-driven tests with good coverage.The
TestMergedIterator_Nextfunction is well-organized and covers a variety of scenarios, including edge cases. The use of table-driven tests enhances readability and makes it easy to add more test cases in the future.
110-115: LGTM: Concise and effective helper function.The
mustfunction is well-implemented using generics, making it flexible for different types. It effectively handles error checking in the test cases. As mentioned in a previous comment, consider addingt.Helper()to improve error reporting.
1-115: Overall, excellent test implementation forMergedIterator.This test file provides comprehensive coverage for the
MergedIteratorfunctionality, including various edge cases and scenarios. The use of table-driven tests enhances readability and maintainability. While there are a few minor suggestions for improvement, the overall quality of the test implementation is high and effectively validates the behavior of theMergedIterator.
| if !reflect.DeepEqual(spec.exp, got) { | ||
| t.Errorf("expected: %#v, got: %#v", spec.exp, got) | ||
| } |
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🛠️ Refactor suggestion
Consider using testify for cleaner assertions.
Instead of using reflect.DeepEqual and manual error reporting, consider using the assert or require package from github.com/stretchr/testify. This can make your assertions more readable and provide better error messages. For example:
assert.Equal(t, spec.exp, got, "unexpected result for test case %s", name)or
require.Equal(t, spec.exp, got, "unexpected result for test case %s", name)
julienrbrt
changed the title
julienrbrt
changed the title
Description
Add a unit test for the merge iterator.
I had this in a branch when I was tracing some errors. It seems useful for main, too.
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Summary by CodeRabbit
Summary by CodeRabbit
MergedIteratorfunctionality, validating various scenarios for merging iterators.